from sqlalchemy.orm import Session
from datetime import datetime
from typing import Optional
from fastapi import HTTPException
from app.modules.suppliers.models import Suppliers
from app.modules.suppliers.schema import 


class SuppliersService:
    @staticmethod
    def create_suppliers(db: Session, data: ):
        
        
        
        
        new_suppliers = Suppliers(**data.dict())
        db.add(new_suppliers)
        db.commit()
        db.refresh(new_suppliers)
        return new_suppliers

    @staticmethod
    def get_suppliers(db: Session, suppliers_id: int, current_user):
        suppliers = db.query(Suppliers).filter(Suppliers.id == suppliers_id).first()
        if not suppliers:
            raise ValueError("suppliers no encontrado")
        return suppliers

    @staticmethod
    def update_suppliers(db: Session, suppliers_id: int, data: , current_user):
        suppliers = db.query(Suppliers).filter(Suppliers.id == suppliers_id).first()
        if not suppliers:
            raise ValueError("suppliers no encontrado")
        
        if current_user.role not in ["ROOT", "ADMIN"]:
            raise ValueError("No tienes permisos para actualizar este suppliers")
        
        update_data = data.dict(exclude_unset=True)
        for key, value in update_data.items():
            setattr(suppliers, key, value)
        
        db.commit()
        db.refresh(suppliers)
        return suppliers

    @staticmethod
    def delete_suppliers(db: Session, suppliers_id: int, current_user):
        suppliers = db.query(Suppliers).filter(Suppliers.id == suppliers_id).first()
        if not suppliers:
            raise ValueError("suppliers no encontrado")
        
        if current_user.role not in ["ROOT", "ADMIN"]:
            raise ValueError("No tienes permisos para eliminar este suppliers")
        
        try:
            suppliers.is_active = False
            suppliers.deleted_at = datetime.utcnow()
            suppliers.deleted_by = current_user.id
            db.commit()
            db.refresh(suppliers)
        except Exception as e:
            db.rollback()
            raise ValueError(f"Error al eliminar el suppliers: {e}")
        
        return {"message": "suppliers eliminado correctamente"}